Science Important Questions❇️
1. Tetanus affects the nervous system of the body.
2. The average blood volume in a healthy human body is 5-6 litres.
3. Purification of human blood takes place in the kidney.
4. The smallest gland of the human body is in the pituitary brain.
5. The largest gland of the human body is the liver.
6. Insulin was discovered by Batting and West.
7. The image of the object is formed in the retina of the eyes.
8. In eye donation, the cornea of the eye is donated.
9. Maximum protein (42%) is found in soybean.
10. Water soluble vitamins are B and C.
11. Vitamin C is found in citrus fruits.
12. The chemical name of Vitamin C is 'Scurvic Acid'.13. Aristotle is called the father of biology.
14. The word biology was first used by Lamarck and Treviranus.
15. Theophrastus is called the father of botany.
16. Linnaeus is called the father of modern taxonomy.
17. Edward Jenner discovered the smallpox vaccine.
18. The botanical name of Mango is Mangifera indica.
19. Carbon dioxide gas contributes the most to the green house effect.
20. Skin cancer is caused by ultraviolet rays of the sun.
21. Rabies vaccine was discovered by Alexander Fleming.
22. Argon gas is filled inside the electric bulb.
23. Nitrous oxide is called laughing gas. It was discovered by Priestley.
24. First of all 'Periodic Table' was created by Russian scientist Mendeleev.
25. The laws of the modern periodic table have been propounded by Moseley.
26. Electric current is measured in ampere.
27. Mechanical energy is converted into electrical energy by a dynamo device.
28. Candle converts chemical energy into light and heat energy.
29. Light year is the unit of measuring distance. Parsec is the largest unit of measurement of distance.
30. Common salt (sodium chloride NaCl) is used in the preservation of food and pickles.
31. Diamond and graphite are allotropes of carbon.
32. Diamond is a bad conductor of electricity and graphite is a good conductor of electricity.
33. L. P.G. Contains a mixture of butane and propane.
34. L. P.G. The strong smell of sulfur is due to the compound (methyl mercaptan) found in it.
35. Silver and copper are the best conductors of electricity.
36. Titanium is called a strategic metal.
37. Silver iodide is used for artificial rain.
38. Silver nitrate is applied to the fingers of voters.
39. Lightning conductor was invented by Benjamin Facklin.
40. Dry ice is solid carbon dioxide.
41. Platnium is called white gold.
42. Chlorine gas discolors flowers.
43. Mercury and Venus do not have a single satellite.
44. Saturn has the maximum number of satellites.
45. Man's blood bank is called spleen.
46 Man gets maximum energy from carbohydrates.
47. The reason why the sea appears blue is the reflection of light and the scattering of water particles by light.
48. Gold dissolves in acidic acid.
49. Polythene is obtained from the polymerization of ethylene.
50. Mitochondria is called the power house of the cell.